modern-linbo-gui/sources/qmodernpushbutton.cpp

/****************************************************************************
 ** Modern Linbo GUI
 ** Copyright (C) 2020  Dorian Zedler <dorian@itsblue.de>
 **
 ** This program is free software: you can redistribute it and/or modify
 ** it under the terms of the GNU Affero General Public License as published
 ** by the Free Software Foundation, either version 3 of the License, or
 ** (at your option) any later version.
 **
 ** This program is distributed in the hope that it will be useful,
 ** but WITHOUT ANY WARRANTY; without even the implied warranty of
 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 ** GNU Affero General Public License for more details.
 **
 ** You should have received a copy of the GNU Affero General Public License
 ** along with this program.  If not, see <http://www.gnu.org/licenses/>.
 ****************************************************************************/

#include "../headers/qmodernpushbutton.h"

QModernPushButton::QModernPushButton(QString icon, QWidget* parent) : QAbstractButton(parent)
{
    this->svgWidget = new QSvgWidget(this);
    this->svgWidget->load(QString(icon));
    this->setMouseTracking(true);

    this->overlayHoveredWidget = new QSvgWidget(this->svgWidget);
    this->overlayHoveredEffect = new QGraphicsOpacityEffect(this);
    this->overlayHoveredEffect->setOpacity(0);
    this->overlayHoveredWidget->setGraphicsEffect(this->overlayHoveredEffect);

    this->overlayPressedWidget = new QSvgWidget(this->svgWidget);
    this->overlayPressedWidget->load(QString(":svgIcons/overlayPressed.svg"));
    this->overlayPressedEffect = new QGraphicsOpacityEffect(this);
    this->overlayPressedEffect->setOpacity(0);
    this->overlayPressedWidget->setGraphicsEffect(this->overlayPressedEffect);

    this->overlayCheckedWidget = new QSvgWidget(this->svgWidget);
    this->overlayCheckedWidget->load(QString(":svgIcons/overlayChecked.svg"));
    this->overlayCheckedEffect = new QGraphicsOpacityEffect(this);
    this->overlayCheckedEffect->setOpacity(0);
    this->overlayCheckedWidget->setGraphicsEffect(this->overlayCheckedEffect);

    connect(this, SIGNAL(toggled(bool)), this, SLOT(handleToggled(bool)));
}

void QModernPushButton::handleToggled(bool checked) {
    int startValue = 1;
    if(checked) {
        startValue = 0;
    }

    QPropertyAnimation *animation = new QPropertyAnimation(this->overlayCheckedEffect, "opacity");
    animation->setDuration(400);
    animation->setStartValue(startValue);
    animation->setEndValue(1-startValue);
    animation->setEasingCurve(QEasingCurve(QEasingCurve::InOutQuad));
    animation->start();
}

void QModernPushButton::resizeEvent(QResizeEvent *event) {
    this->svgWidget->setGeometry(QRect(0, 0, event->size().width(), event->size().height()));

    // make border width match button size
    QFile file(":svgIcons/overlayNormal.svg");
    file.open(QFile::ReadOnly);
    QString overlayNormalString = file.readAll();
    //overlayNormalString.replace("stroke-width:15px", "stroke-width:" + QString::number(500/event->size().width() * 5) + "px");
    this->overlayHoveredWidget->load(overlayNormalString.toUtf8());
    this->overlayHoveredWidget->setGeometry(QRect(0, 0, event->size().width(), event->size().height()));

    this->overlayCheckedWidget->setGeometry(QRect(0, 0, event->size().width(), event->size().height()));
}

void QModernPushButton::paintEvent(QPaintEvent *e) {
    Q_UNUSED(e)
}


void QModernPushButton::keyPressEvent(QKeyEvent *e) {
    // TODO

    return QAbstractButton::keyPressEvent(e);
}

void QModernPushButton::keyReleaseEvent(QKeyEvent *e) {
    // TODO
    return QAbstractButton::keyReleaseEvent(e);
}

void QModernPushButton::enterEvent(QEvent *e) {
    this->overlayHoveredEffect->setOpacity(1);
    return QAbstractButton::enterEvent(e);
}

void QModernPushButton::leaveEvent(QEvent *e) {
        this->overlayHoveredEffect->setOpacity(0);
    return QAbstractButton::leaveEvent(e);
}

void QModernPushButton::mousePressEvent(QMouseEvent *e) {
    this->overlayPressedEffect->setOpacity(1);
    return QAbstractButton::mousePressEvent(e);
}

void QModernPushButton::mouseReleaseEvent(QMouseEvent *e) {
    this->overlayPressedEffect->setOpacity(0);
    return QAbstractButton::mouseReleaseEvent(e);
}